Hi Mankster, most rc manufacturers, do not make the crystals,
they will get them from a place like hyko japan that just makes coils, crystals etc only,
Also for rc they are made in pairs and must be used as such.
So there a pretty standard item even though the rc makers will put their own labels/markings on them.
the other important factors is whether its an, Am tx & rx, or Fm tx rx. 27mhz or 40mhz
ie am 27mhz xtal for am 27mhz set, fm 40mhz xtal for fm 40mhz.
dazzle (bob)